CN203984643U - Passive radiator - Google Patents

Passive radiator Download PDF

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Publication number
CN203984643U
CN203984643U CN201420306899.5U CN201420306899U CN203984643U CN 203984643 U CN203984643 U CN 203984643U CN 201420306899 U CN201420306899 U CN 201420306899U CN 203984643 U CN203984643 U CN 203984643U
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China
Prior art keywords
oscillating plate
passive radiator
boss
balancing weight
passive
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Active
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CN201420306899.5U
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Chinese (zh)
Inventor
谢光宇
吴云虎
恽立军
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CHANGZHOU TAILONG ELECTRONICS AND ACOUSTICS Co Ltd
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CHANGZHOU TAILONG ELECTRONICS AND ACOUSTICS Co Ltd
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Priority to CN201420306899.5U priority Critical patent/CN203984643U/en
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Abstract

The utility model belongs to passive radiator field, particularly a kind of passive radiator being arranged on airtight audio amplifier.Passive radiator, comprise voice box casing, on voice box casing, be provided with passive installing hole, also comprise the annular diaphragm being connected with passive installing hole edge, on annular diaphragm, be provided with the surround of circular arc, the middle part of annular diaphragm is provided with oscillating plate, and the middle part of oscillating plate convexes to form boss to a side, opposite side at oscillating plate forms a cavity, and oscillating plate adopts the injection mo(u)lding of PP material.In the utility model boss structural strengthening the intensity of oscillating plate, overcome the oscillating plate rigidity deficiency of existing sheet material shape, ensure the acoustical quality of passive radiator, the boss structure arranging is in the time pasting balancing weight, can position balancing weight, ensure the consistency of the center of gravity of balancing weight and oscillating plate, minimizing balancing weight and the oscillating plate center of gravity clutter producing in vibration processes that do not coexist, further improves the acoustical quality of passive radiator.

Description

Passive radiator
Technical field
The utility model belongs to passive radiator field, particularly a kind of passive radiator being arranged on airtight audio amplifier.
Background technology
For some audio amplifiers, due to the restriction of volume, the loud speaker using can not be too large, the general loud speakers that all use below 2 inches or 2 inches, cause its vibration effective area corresponding less, and the quality of vibrating diaphragm is also relatively little, thereby its low-frequency resonant frequency is higher, so just caused the shortage of audio amplifier bass.At present, the major way addressing this problem is by phase-reversing tube or low-frequency passive radiator.
Phase-reversing tube is exactly one section of hollow pipe in fact, conventionally makes with PVC material, also has plenty of metal tube or cardboard tube.Phase-reversing tube communicates with extraneous space by an outlet of audio amplifier front panel or postnotum, and that outlet is exactly paraphase hole.Vibrating diaphragm in porpoise, except will be outside the radiative acoustic wave of front (case), also can be towards radiative acoustic wave in case, and paraphase hole can discharge the low-frequency sound wave being radiated in case again.Because the sound wave phase place of radiation is just in time contrary before and after vibrating diaphragm, if directly released, total low frequency energy not only can not be strengthened, and can be cancelled on the contrary weakening.So the sound wave phase place being radiated in case must be put upside down once again, i.e. anti-turnback, so and the sound wave homophase of forward radiation.But it is internally-damped too small that its shortcoming is audio amplifier, and the impact of paraphase hole or phase-reversing tube viscous damping is more serious, makes its low frequency definition poor.Conventionally replace phase-reversing tube in order to regulate compared with the tonequality of small box and to make it have better bass performance with passive radiator.
Low-frequency passive radiator does not have magnetic circuit and voice coil loudspeaker voice coil, and the motion of vibrating diaphragm is leaned on the promotion of air-flow in casing and carried out.As shown in Figure 1,1 is voice box casing, the 2nd, and initiatively loudspeaker unit, the 3rd, low-frequency passive radiator.Because low-frequency passive radiator 3 and active loudspeaker unit 2 are mounted in the casing 1 of sealing, like this, in the time that active speaker operation is sounded, the motion of its vibrating diaphragm, can cause the compressed and expansion of air in casing 1, under the effect of air pressure change, passive vibrating diaphragm produces vibration, promote the air outside casing 1, so just can sound.By the adjusting of different counterweights, low-frequency passive radiator can resonate on different frequency.
More and more application low-frequency passive radiator structures as shown in Figure 2 that start in existing audio amplifier.The 21st, ring; 22 is oscillating plate; 23 is counterweight.The edge of the edge of ring 21 and oscillating plate 22 is glued together, and forms an airtight space with casing 3.Counterweight is conventionally with metallic plate or the larger material of cardboard isodensity, and the little bass radiation intensity that but can increase of volume, produces strong and powerful, mellow and full bass.By the adjusting of different counterweights, although low-frequency passive radiator can resonate on different frequency, the low-frequency passive radiator of this structure is widely used, but existing oscillating plate generally adopts metallic plate or paper board material to make, the cost of processing is higher, due to the reasons in structure of planar materials, the insufficient strength of oscillating plate, its vibrating effect is general, and the tonequality obtaining is also poor.
Summary of the invention
For the deficiencies in the prior art, it is low that the utility model has designed a kind of cost, good rigidly, the passive radiator that tonequality is good.
The utility model is achieved through the following technical solutions:
Passive radiator, comprise voice box casing, on voice box casing, be provided with passive installing hole, it is characterized in that: also comprise the annular diaphragm being connected with passive installing hole edge, on described annular diaphragm, be provided with the surround of circular arc, the middle part of annular diaphragm is provided with oscillating plate, and the middle part of described oscillating plate convexes to form boss to a side, opposite side at oscillating plate forms a cavity, and oscillating plate adopts the injection mo(u)lding of PP material.
The utility model is strengthened the rigidity of oscillating plate by boss is set on oscillating plate, overcome the problem of existing sheet material shape oscillating plate poor rigidity, improve the rigidity of oscillating plate, thereby ensure the vibrating effect of passive radiator, thereby ensured the acoustical quality of passive radiator, oscillating plate of the present utility model adopts PP materials processing to form in addition, effectively reduces the cost of passive radiator, reduce production difficulty, improved production efficiency.
Further, described boss be shaped as cylindricality or racetrack.
Further, described boss be shaped as square.
Above-mentioned is the conventional shape of boss, can certainly need to carry out personalized customization to the shape of boss according to client.
Further, on the wall of described cavity, be pasted with balancing weight, balancing weight is arranged in cavity and can positions balancing weight, ensure the center of gravity of balancing weight and the center of gravity of oscillating plate in a straight line, reduce the vibration clutter that balancing weight and oscillating plate center of gravity do not produce on same straight line, the acoustical quality of product is also provided.
In sum, the utlity model has following beneficial effect:
1, in the utility model, adopt the oscillating plate with boss, first, boss structure has been strengthened the intensity of oscillating plate, overcome the oscillating plate rigidity deficiency of existing sheet material shape, in vibration processes, there is the defect of energy loss, ensure the acoustical quality of passive radiator, secondly the boss structure arranging is in the time pasting balancing weight, can position balancing weight, ensure the consistency of the center of gravity of balancing weight and oscillating plate, reduce balancing weight and the oscillating plate center of gravity clutter producing in vibration processes that do not coexist, further improve the acoustical quality of passive radiator.
2, oscillating plate of the present utility model adopts PP materials processing to form, can effectively reduce the cost of passive radiator, reduce production difficulty, improve production efficiency, boss shape of the present utility model can also customize according to client's needs in addition, meets client to the diversified requirement of passive radiator shape.
Brief description of the drawings
Fig. 1 is the structural representation of the existing audio amplifier with passive radiator;
Fig. 2 is the structural representation of existing low-frequency passive radiator;
Fig. 3 is structural representation of the present utility model;
Fig. 4 is the structural representation of the first oscillating plate;
Fig. 5 is the structural representation of the second oscillating plate;
Fig. 6 is the structural representation of the third oscillating plate;
In figure, 1 is voice box casing, the 2nd, and initiatively loudspeaker unit, the 3rd, low-frequency passive radiator, 4 is annular diaphragm, and 5 is surround, and 6 is oscillating plate, and 7 is boss, and 8 is balancing weight, and 21 is ring, and 22 is oscillating plate, 23 is counterweight.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Passive radiator as shown in Figure 3, comprise voice box casing 1, on voice box casing 1, be provided with passive installing hole, it is characterized in that: also comprise the annular diaphragm 4 being connected with passive installing hole edge, the surround 5 that is provided with circular arc on described annular diaphragm 4, the middle part of annular diaphragm 4 is provided with oscillating plate 6, and the middle part of described oscillating plate 6 convexes to form boss 7 to a side, opposite side at oscillating plate forms a cavity, and oscillating plate 7 adopts the injection mo(u)lding of PP material.
The utility model is strengthened the rigidity of oscillating plate by boss is set on oscillating plate, overcome the problem of existing sheet material shape oscillating plate poor rigidity, improve the rigidity of oscillating plate, thereby ensure the vibrating effect of passive radiator, thereby ensured the acoustical quality of passive radiator, oscillating plate of the present utility model adopts PP materials processing to form in addition, effectively reduces the cost of passive radiator, reduce production difficulty, improved production efficiency.
Further, boss as shown in Figure 4 and Figure 5 be shaped as cylindricality or racetrack.
Further, boss as shown in Figure 6 be shaped as square.
Above-mentioned is the conventional shape of boss, can certainly need to carry out personalized customization to the shape of boss according to client.
Further, on the wall of described cavity, be pasted with balancing weight 8, balancing weight 8 is arranged in cavity and can positions balancing weight, ensure the center of gravity of balancing weight and the center of gravity of oscillating plate in a straight line, reduce the vibration clutter that balancing weight and oscillating plate center of gravity do not produce on same straight line, the acoustical quality of product is also provided.
In sum, the utlity model has following beneficial effect:
1, in the utility model, adopt the oscillating plate with boss, first, boss structure has been strengthened the intensity of oscillating plate, overcome the oscillating plate rigidity deficiency of existing sheet material shape, in vibration processes, there is the defect of energy loss, ensure the acoustical quality of passive radiator, secondly the boss structure arranging is in the time pasting balancing weight, can position balancing weight, ensure the consistency of the center of gravity of balancing weight and oscillating plate, reduce balancing weight and the oscillating plate center of gravity clutter producing in vibration processes that do not coexist, further improve the acoustical quality of passive radiator.
2, oscillating plate of the present utility model adopts PP materials processing to form, can effectively reduce the cost of passive radiator, reduce production difficulty, improve production efficiency, boss shape of the present utility model can also customize according to client's needs in addition, meets client to the diversified requirement of passive radiator shape.

Claims (4)

1. passive radiator, comprise voice box casing, on voice box casing, be provided with passive installing hole, it is characterized in that: also comprise the annular diaphragm being connected with passive installing hole edge, on described annular diaphragm, be provided with the surround of circular arc, the middle part of annular diaphragm is provided with oscillating plate, and the middle part of described oscillating plate convexes to form boss to a side, opposite side at oscillating plate forms a cavity, and oscillating plate adopts the injection mo(u)lding of PP material.
2. passive radiator according to claim 1, is characterized in that: described boss be shaped as cylindricality or racetrack.
3. passive radiator according to claim 1, is characterized in that: described boss be shaped as square.
4. passive radiator according to claim 1, is characterized in that: on the wall of described cavity, be pasted with balancing weight.
CN201420306899.5U 2014-06-10 2014-06-10 Passive radiator Active CN203984643U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420306899.5U CN203984643U (en) 2014-06-10 2014-06-10 Passive radiator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420306899.5U CN203984643U (en) 2014-06-10 2014-06-10 Passive radiator

Publications (1)

Publication Number Publication Date
CN203984643U true CN203984643U (en) 2014-12-03

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105592391A (en) * 2016-03-23 2016-05-18 浙江全方音响科技有限公司 Double-folding ring radiator
CN105933804A (en) * 2016-06-30 2016-09-07 乐视控股(北京)有限公司 Sound box and passive radiator thereof
CN110300358A (en) * 2018-03-22 2019-10-01 宏碁股份有限公司 A kind of loadspeaker structure
CN111083617A (en) * 2019-12-20 2020-04-28 歌尔股份有限公司 Sound production device and electronic equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105592391A (en) * 2016-03-23 2016-05-18 浙江全方音响科技有限公司 Double-folding ring radiator
CN105933804A (en) * 2016-06-30 2016-09-07 乐视控股(北京)有限公司 Sound box and passive radiator thereof
CN110300358A (en) * 2018-03-22 2019-10-01 宏碁股份有限公司 A kind of loadspeaker structure
CN110300358B (en) * 2018-03-22 2020-12-22 宏碁股份有限公司 Loudspeaker structure
CN111083617A (en) * 2019-12-20 2020-04-28 歌尔股份有限公司 Sound production device and electronic equipment

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